Elsevier Science · McGraw-Hill
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Personalized System of Instruction: P S I-Keller Plan | 978-0-07-049650-7 (0-07-049650-1) | 1975 | Jerry L. Petr |
| Weather and Yield | 978-0-444-98803-4 (0-444-98803-3) | 1991 | |
J. P. · Jan Petr · Jan Petr Jordan · Jancar, Petr · Jerry L. Petr · Jiri Petr · Josy Petr